Android快捷方式位图启动器图标大小

Question

我有问题找到我的快捷方式的正确的启动器图标大小.

在我的Nexus 7.2上,android.R.dimen.app_icon_size(参见代码)的值为96像素.但是,如果我在主屏幕的屏幕截图上测量其他应用的真实图标大小,则为120像素.创建一个shortshut后,它比所有其他应用程序图标(120px)更小(96像素)

在我的三星Galaxy SII android.R.dimen.app_icon_size是72.这匹配我的截图测量.

这里的结果

DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);

Nexus 7.2:

android.R.dimen.app_icon_size = 96
metrics.dip = 192
metrics.density = 2.0
metrics.densityDpi = 320
metrics.heightPixels = 1824
metrics.scaledDensity = 2.0
metrics.widthPixels = 1200
metrics.xdpi = 320.842
metrics.ydpi = 322.966

三星SII:

android.R.dimen.app_icon_size = 72
metrics.dip = 108
metrics.density = 1.5
metrics.densityDpi = 240
metrics.heightPixels = 800
metrics.scaledDensity = 1.5
metrics.widthPixels = 480
metrics.xdpi = 217.71428
metrics.ydpi = 218.49463

这是我的代码:

// Calculate launcher icon size
int size = (int) getResources().getDimension(android.R.dimen.app_icon_size);
int width = size;
int height = size;

// Create launcher icon bitmap      
Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);

// Inflate layout to bitmap
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
LinearLayout layout = (LinearLayout) inflater.inflate(R.layout.shortcut, null, false);
// here I edit layout, change ImageView and TextView etc...
layout.setDrawingCacheEnabled(true);
layout.measure(MeasureSpec.makeMeasureSpec(width, MeasureSpec.EXACTLY), MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY));
layout.layout(0, 0, layout.getMeasuredWidth(), layout.getMeasuredHeight());
canvas.drawBitmap(layout.getDrawingCache(), 0, 0, new Paint());

// Create SendFax intent
Intent shortcutIntent = new Intent();
shortcutIntent.setClass(context, SendFax.class);
shortcutIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
shortcutIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);

// Create shortcut intent               
Intent intent = new Intent();
intent.putExtra(Intent.EXTRA_SHORTCUT_ICON, bitmap);
intent.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent);
intent.putExtra(Intent.EXTRA_SHORTCUT_NAME, description);

setResult(RESULT_OK, intent);
finish();

Answer 1

我找到了一个有效的解决方案:

@TargetApi(Build.VERSION_CODES.HONEYCOMB)
private int launcherLargeIconSize() {
    ActivityManager activityManager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
    return activityManager.getLauncherLargeIconSize();
}

int size1 = (int) getResources().getDimension(android.R.dimen.app_icon_size);
int size2 = Build.VERSION.SDK_INT >= 11 ? launcherLargeIconSize() : 0;
int size = size2 > size1 ? size2 : size1;